Golf Bag Cart

ABSTRACT

A golf bag cart is disclosed, comprising a bottom cart stand, having a link segment at its top, and a bag base at its bottom, where the bottom cart stand is provided with a slider thereon; an upper cart stand, in pinned connection with the link segment at its bottom; a rear wheel frame, fixed at each of both sides of the link segment, where the two rear wheel frames and the bottom cart stand together form a pyramid, and the bottom end of the rear wheel frame connects to the rear wheel; a linkage, set up between the upper cart stand and the slide; a draw pole, set up between the slide and the rear wheel frame; a front wheel, positioned under the bag base, having a folding joint, which could level the front wheel; and a lock mechanism, having a core, in pinned connection to the top of the slider, where the upper cart stand and the bottom cart stand are thus fastened to each other; the rear wheels could be spread up, subject to the linking among the linkage, the slider, the draw pole and the rear wheel frame; through the pyramid, formed by the two rear wheel frames and the bottom cart stand, the cart is able to stand up on the ground with better backing, which sufficiently holds the bag load, to keep the cart sustainable and to avoid deforming into collapse.

BACKGROUND OF THE INVENTION

1. Field of the Invention

This invention relates generally to golf bag carts and more specificallyto a structure characterizing a rock-steady frame, scarcely deforminginto collapse.

2. Description of the Prior Art

Prior art golf bag carts have a common structure in FIG. 1, where theupper tube 11 and the handle bar 12 are provided with a joint mechanism10 in between, and the bottom end of the upper tube 11 and theconnecting mount 17 are linked each other. The connecting mount 17 isfurther linked to the bottom cart stand 16 and the wheel frame 13. Thebottom cart stand 16 is provided with a slider 18, which could join theupper tube 11 by a vertical draw bar 19, enabling the link between theupper tube 11 and the slider 18. A crosswise draw bar 14, set upphysically between the wheel frame 13 and the slider 18, drives the tworear wheels to fold inwardly the moment that the upper tube 11 is beingfolded.

The wheel frame 13 and the bottom cart stand 16 are joinedperpendicularly by means of the connecting mount 17. Once the golf bagis loaded on the cart and the horizontal bottom cart stand 16 lacks ofany load supports in design, the bottom cart stand 16 would sink intodeformation, which will further damage the cart frame. This defectdefinitely requires a great improvement.

The applicant of this invention realized the situation and instructedthe inventor to push hardly ahead with the research and design, andeventually gave birth to the present invention.

SUMMARY OF THE INVENTION

The objective of the present invention is to provide a golf bag carthaving a rock-steady frame and scarcely deforming into collapse, whichtargets to improve the defects of the prior art.

To accomplish the aforesaid objective, the present invention comprises:a bottom cart stand, having a link segment at its top, and a bag base atits bottom, where the bottom cart stand is provided with a sliderthereon; an upper cart stand, in pinned connection with the link segmentat its bottom; a rear wheel frame, fixed at each of both sides of thelink segment, where the two rear wheel frames and the bottom cart standtogether form a pyramid, and the bottom end of the rear wheel frameconnects to the rear wheel; a linkage, set up between the upper cartstand and the slide, to link the upper cart stand physically to theslider; a draw pole, set up between the slide and the rear wheel frame,to link the slider physically to the rear wheel frame; a front wheel,positioned under the bag base, having a folding joint, which could levelthe front wheel; and a lock mechanism, having a core, in pinnedconnection to the top of the slider, where the upper cart stand and thebottom cart stand are thus fastened to each other; by way of the abovestructural combination, the folding operation is carried out byreleasing the lock mechanism, twisting the upper cart stand and thebottom cart stand to put together closely, and leveling the front wheel;whereas the unfolding operation requires the slider to slide toward thelink segment subject to the linking of the linkage, the slider, the drawpole and the rear wheel frame, and the upper cart stand and the bottomcart stand are fastened to each other through the use of the lockmechanism, followed by spreading up the rear wheels; the pyramid, formedby the two rear wheel frames and the bottom cart stand, supports thecart to stand up on the ground, which sufficiently holds the load in thebag, to keep the cart sustainable and to avoid deforming into collapse.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a three-dimensional view of the golf bag cart of the priorart;

FIG. 2 is a three-dimensional view of the present invention;

FIG. 3 is a sectional view of the present invention;

FIG. 4 is a three-dimensional exploded view of the folding joint of thefront wheel of the present invention;

FIG. 5 is a three-dimensional exploded view of the lock mechanism of thepresent invention;

FIG. 6 is an assembled sectional view of the lock mechanism of thepresent invention;

FIG. 7 is a schematic diagram of the motions of the folding of thepresent invention;

FIG. 8 is a three-dimensional view of the leveled front wheel of thepresent invention; and

FIG. 9 is a three-dimensional view at the moment of the folding of thepresent invention.

DETAILED DESCRIPTION OF THE INVENTION

The structural traits and the functioning of the present invention aredetailed described with reference to the following preferred exemplifiedembodiment and the accompanying drawings, which helps the honorableExaminer to have a thorough comprehension and recognition.

Referring to FIGS. 2-6, the figures show the structure of the golf bagcart is symmetric on the left and the right. In favor of comprehension,the following description is subject to merely a single side of thestructure.

The present invention comprises: a bottom cart stand 2, having a centrallink segment 21 at its top and a bag base 22 at its bottom, where thebottom cart stand 2 is provided with a trench 23 at each of the twosides near the link segment 21, for the accommodation of a slider 24,and the bottom cart stand 2 is provided with a spring 25 hidden in itsinternal, where its one end is joined fixedly to the link segment 21,while the other end to the slider 24; an upper cart stand 3, in pinnedconnection with the link segment 21 at its bottom; a rear wheel frame 4,fixed at each of the two sides of the link segment 21, with one endjoining fixedly to the link segment 21 through the use of the fasteners212 & 213, and with the other end coupling to the rear wheel 40; alinkage 5, joined to the upper cart stand 3 at its one end, and to theslider 24 at the other end, to link the upper cart stand 3 physically tothe slider 24; a draw pole 50, joined the slider 24 with the rear wheelframe 4, to link the slider 24 physically to the rear wheel frame 4; afront wheel 6, joined to a hinge 221 of the bag base 22 through afolding joint 60, where the folding joint 60, shown in FIG. 4,comprises: a body 61, joined to another joint mechanism 20 at its top,where the joint mechanism 20 is coupled to the bottom cart stand 2 atthe other end, for providing the bottom cart stand 2 and the front wheel6 to fold, and the body 61 is provided with an U-shaped clasp trough 62;a sleeve 63, having a protruded pillar 64 at its top, joining frontwheel frame 66 at its bottom, and wearing a spring 65 at its outersurface; and a lock mechanism 7, as in FIGS. 5 & 6, comprising a core70, atorque spring 71 at its middle, pin-connected to the top of theslider 24, with one end having a resilient buckle 72, and the other enda clasp hook 73, for seizing with a triangle-shaped clasp chunk 211,where the clasp chunk 211 is protruded on the link segment 21.

According to the above structure, the folding is carried out by firstreleasing the lock mechanism 7, which enables the separation of theclasp hook 73 from the clasp chunk 211, followed by turning the uppercart stand 3 forward and downward, shown in FIG. 7, the slider 24 movesforward along the bottom cart stand 2 through the push by the linkage 5,and the slider 24 pulls the rear wheel frame 4 to move forward andinward by the drag of the draw pole 50, which makes the rear wheel 40 tofollow suit in moving forward and inward to be folded; the sleeve 63 ofthe folding joint 60 of the front wheel is pulled out and turned rightto lodge the protruded pillar 64 into one end of the clasp trough 62 fora fixing, which enables the front wheel 6 to be leveled, shown in FIG.8, and through the linking of the joint mechanism 20, the front wheel 6is turned inward, to be folded under the bottom cart stand 2, shown inFIG. 9. In brief, during the folding of this invention, releasing thelock mechanism 7 comes first, the next step is to twist the upper cartstand 3 and to put closely to the bottom cart stand 2, and the lastmotion is to level the front wheel 6 for turning inward for thecollection by use of the folding joint 60, shown in FIG. 9, toaccomplish the folding operation, which substantially eases the use.

On the contrary, once the unfolding is demanded, the front wheel 6 isturned forward first and flipped over to its position, and then turningthe upper cart stand 3 up, the slider 24 is thus sliding toward the linksegment 21 and the rear wheels 40 are spreading up, subject to thelinking of the linkage 5, the slider 24, the draw pole 50 and the rearwheel frame 4; once the slider 24 approaches the link segment 21, thebottom cart stand 2 and the upper cart stand 3 can lock each other,through the clasp hook 73 of the lock mechanism 7 gripping the claspchunk 211 of the link segment 21.

Among the aforesaid folding and unfolding operations, the traits thatdeserve to reiterate are as follows:

-   -   (I.) During the unfolding, the fasteners 212 & 213, used for        joining the link segment 21 to the rear wheel frame 4, have an        included angle with respect to the ground, shown in FIG. 2,        which causes the rear wheel frames 4 and the bottom cart stand 2        to form a steady pyramid that stands on the ground with better        support, and can sufficiently hold the bag load, which scarcely        deforms into collapse.    -   (II.) The bottom cart stand 2 is provided with a trench 23,        matching the slider 24, at each of its both sides, which forms a        space between the surface of the bottom cart stand 2 and the        slider 24, to avoid the slider 24 to scrape the surface of the        bottom cart stand 2 as it slides, where the impairment would        deteriorate the looks.    -   (III.) The bottom cart stand 2 is provided with a spring 25        hidden in its internal. During the folding, the slider 24,        sliding forward along the bottom cart stand 2, will elongate the        spring 25, shown in FIG. 7; on the contrary, the unfolding        operation takes advantage of the restored force of the spring        25, to assist the slider 24 to slide along the bottom cart stand        2, which considerably reduce the efforts in the unfolding        operation.

From the description in the above, the present invention features atleast the following advantages and functioning, which is much creativethan the prior art.

-   -   1. As the cart is unfolded for carrying the bag load, it has        better support that sufficiently hold whatever weight of the        load, which maintains the cart frame in a rock-steady manner,        scarcely to deform into collapse.    -   2. The bottom cart stand is from-top-to-down oblique in shape,        which features to align the motions of the folding and unfolding        operations and the sliding of the slider fully with the        orientation of the user's exerted force, which means handling        with great ease.    -   3. The bottom cart stand is provided with a spring hidden in its        internal, which offers extra aid to the unfolding operation of        the cart, making the move more smooth and easy.

To sum up, the disclosed concrete structure of the exemplifiedembodiment of the present invention is not only unknown to the priorart, but absolutely can accomplish the expected objective and function,which is construed as novelty and creativeness and is also construed asusefulness, thereby filing the present application herein subject to thepatent law.

1. A golf bag cart, comprising: a.) a bottom cart stand, having a linksegment at its top, and a bag base at its bottom, where said bottom cartstand is provided with a slider thereon; b.) an upper cart stand, inpinned connection with the link segment at its bottom; c.) a rear wheelframe, fixed at each of both sides of the link segment, together withsaid bottom cart stand to form a pyramid, and its bottom end connectingto a rear wheel; d.) a linkage, set up between said upper cart stand andthe slide, to link said upper cart stand physically to the slider; e.) adraw pole, set up between the slide and said rear wheel frame, to linkthe slider physically to said rear wheel frame; f.) a front wheel,positioned under the bag base, having a folding joint, capable ofleveling said front wheel; g.) a lock mechanism, having a core, inpinned connection to the top of the slider, capable of fastening saidupper cart stand and said bottom cart stand to each other; wherein basedon the above structural combination, the folding operation being carriedout by releasing said lock mechanism, twisting said upper cart stand andsaid bottom cart stand to put together closely, and leveling said frontwheel; whereas the unfolding operation requires the slider to slidetoward the link segment subject to the linking of said linkage, theslider, said draw pole and said rear wheel frame, and said upper cartstand and said bottom cart stand being fastened to each other throughthe use of said lock mechanism, followed by spreading up the rearwheels; the pyramid, formed by said two rear wheel frames and saidbottom cart stand, making the cart standing on the ground with bettersupport, and capable of sufficiently holding the bag load, maintainingthe cart framing in a rock-steady manner, which would scarcely deforminto collapse
 2. A golf bag cart as in claim 1 wherein the link segmentof said bottom cart stand joins said rear wheel frame fixedly by meansof fasteners, where the fastener has an included angle with respect tothe ground.
 3. A golf bag cart as in claim 1 wherein said bottom cartstand is provided with a trench, matching the slider, at each of itsboth sides.
 4. A golf bag cart as in claim 1 wherein said bottom cartstand is provided with a spring in its internal, with one end connectingto the link segment, and the other end to the slider.
 5. A golf bag cartas in claim 1 wherein said lock mechanism comprises: a.) a core, havinga torque spring at its middle, pin-connected to the top of the slider,where its one end is provided with a resilient buckle, and the other enda clasp hook; and b.) a clasp chunk, protruded on the link segment.